CN108614646A - Touch device and its touch control detection integrated circuit - Google Patents
Touch device and its touch control detection integrated circuit Download PDFInfo
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- CN108614646A CN108614646A CN201710066124.3A CN201710066124A CN108614646A CN 108614646 A CN108614646 A CN 108614646A CN 201710066124 A CN201710066124 A CN 201710066124A CN 108614646 A CN108614646 A CN 108614646A
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- drive signal
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Image Input (AREA)
Abstract
Touch device and its touch control detection integrated circuit.Touch control detection integrated circuit includes drive signal generation circuit and receiving circuit.Drive signal generation circuit is for transmitting at least one first drive signal to touch panel and transmitting the second drive signal to fingerprint sensor.During drive signal generation circuit exports the first drive signal to touch panel, receiving circuit receives and processes the touching signals of touch panel.During drive signal generation circuit exports the second drive signal to fingerprint sensor, receiving circuit receives and processes the fingerprint signal of fingerprint sensor.
Description
Technical field
The present invention relates to a kind of integrated circuits, and more particularly to a kind of touch device and its touch control detection integrated circuit.
Background technology
With the development of science and technology the convenience and application of electronic device are increasingly progressive.Electronic device is often configured with
Touch panel and other sensors (such as fingerprint sensor).Touch panel and the fingerprint sensor module that be two different.
In the circuit design of known electronic, touch panel is controlled by (the dedicated touch-control inspection of touch panel of a drive integrated circult
Survey integrated circuit), and fingerprint sensor is then another integrated circuit (the fingerprint sensing integrated circuit for obtaining fingerprint).
Invention content
The present invention provides a kind of touch device and its touch control detection integrated circuit, with the same integrated circuit come drive/
Control touch panel and fingerprint sensor.
The embodiment of the present invention provides a kind of touch control detection integrated circuit, for driving touch panel and receiving touch panel
One or more touching signals, and driving fingerprint sensor and receive one or more fingerprint signals of fingerprint sensor.Touch-control is examined
It includes drive signal generation circuit and one or more receiving circuits to survey integrated circuit.Drive signal generation circuit can transmit one or
Multiple first drive signals are to the touch panel, and transmit one or more second drive signals to fingerprint sensor.First
Period, receiving circuit can receive and process the touching signals of touch panel.In the second phase, receiving circuit can receive and locate
Manage the fingerprint signal of fingerprint sensor.
The embodiment of the present invention provides a kind of touch device, includes system processor, touch panel, fingerprint sensor and tactile
Control detection integrated circuit.Touch control detection integrated circuit is coupled to system processor by interface.Touch control detection integrated circuit also coupling
It is connected to touch panel.Touch control detection integrated circuit can drive touch panel and receive one or more touch-controls letter of touch panel
Number, and drive fingerprint sensor and receive one or more fingerprint signals of fingerprint sensor.Touch control detection integrated circuit includes
Drive signal generation circuit and at least one receiving circuit.Drive signal generation circuit is for transmitting one or more first driving letters
Number to touch panel, and one or more second drive signals are transmitted to fingerprint sensor.In first period, receiving circuit can be with
Receive and process the touching signals of touch panel.In the second phase, receiving circuit can receive and process the finger of fingerprint sensor
Line signal.
Based on above-mentioned, touch device and its touch control detection integrated circuit described in all embodiments of the present invention are configured with driving letter
Number generation circuit and receiving circuit.Drive signal generation circuit and receiving circuit can execute the touch-control inspection of touch panel jointly
Operation is surveyed, and the common fingerprint detection operation for executing fingerprint sensor.The same touch control detection integrated circuit can both drive/
Touch panel is controlled, and can drive/control fingerprint sensor.Therefore, touch control detection product body electricity can effectively save touch-control dress
The system cost set.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and it is detailed to coordinate attached drawing to make
Carefully it is described as follows.
Description of the drawings
Fig. 1 is the circuit box schematic diagram according to a kind of touch device depicted in one embodiment of the invention.
Fig. 2 is the circuit according to drive signal generation circuit and receiving circuit shown in one embodiment of the invention definition graph 1
Block schematic diagram.
Fig. 3 is the circuit box schematic diagram according to receiving circuit shown in another embodiment of the present invention definition graph 1.
Fig. 4 is the circuit box schematic diagram according to receiving circuit shown in another embodiment of the present invention definition graph 1.
Fig. 5 is to show according to the circuit box of touch control detection integrated circuit 130 shown in one more embodiment of the present invention definition graph 1
It is intended to.
【Symbol description】
100：Touch device
110：Touch panel
120：Fingerprint sensor
130：Touch control detection integrated circuit
131：Drive signal generation circuit
132：Receiving circuit
133：Finger detection circuit
140：System processor
210：Buffer
220：Control circuit
230：Analog drive circuit
240：De-multiplexer
250：Multiplexer
260：Analog front circuit
270：Analog-digital converter
280：Data processing circuit
310：First analog front circuit
320：First analog-digital converter
330：First data processing circuit
340：Second analog front circuit
350：Second analog-digital converter
360：Second data processing circuit
410：Multiplexer
420：Analog front circuit
430：Analog-digital converter
440：Data processing circuit
450：Microprocessor
460：Nonvolatile memory
1TS：First drive signal
2TS：Second drive signal
Sf：Fingerprint signal
St：Touching signals
Specific implementation mode
" coupling (or connection) " word used in present specification full text (including claims) can refer to appoint
What direct or indirect connection means.For example, if it is described herein that first device coupling (or connection) is then answered in second device
This be construed as the first device can be directly connected to the second device or the first device can by other devices or
Certain connection means and be coupled indirectly to the second device.In addition, all possible places, use phase in schema and embodiment
Element/component/step with label represents same or like part.Identical label is used in different embodiments or uses identical use
Element/component/step of language can be with cross-referenced related description.
Fig. 1 is the circuit box schematic diagram according to a kind of touch device 100 depicted in one embodiment of the invention.Scheming
In 1 illustrated embodiment, touch device 100 includes touch panel 110, touch control detection integrated circuit 130 and system processor 140.
System processor 140 is coupled to touch control detection integrated circuit 130 by interface.According to design requirement, the interface can be logical
With input and output (General Purpose Input/Output, GPIO) interface circuit, internal integrated circuit (inter
Integrated circuit, I2C) interface circuit, serial circumference interface (serial peripheral interface, SPI)
Interface circuit or other interface circuits.The system processor 140 can be central processing unit (Central
Processing Unit, CPU), digital signal processor (Digital Signal Processor, DSP) or other processing
Circuit (or control circuit).
In some embodiments, touch control detection integrated circuit 130 further includes fingerprint sensor 120 and is coupled to touch panel
110.According to design requirement, in other embodiments, fingerprint sensor 120 can be configured in touch control detection integrated circuit 130
Outside.In the embodiment shown in fig. 1, touch control detection integrated circuit 130 can drive touch panel 110, and receive touch surface
One or more touching signals St of plate 110.Touch control detection integrated circuit 130 can also drive 120 (fingerprint sensing of fingerprint sensor
Device 120 can be configured in the internal or external of touch control detection integrated circuit 130), to receive the one or more of fingerprint sensor 120
A fingerprint signal Sf.
Furthermore, it is understood that touch control detection integrated circuit 130 includes drive signal generation circuit 131 and receiving circuit 132.
Drive signal generation circuit 131 can transmit one or more first drive signal 1TS to touch panel 110, and transmission one or
Multiple second drive signal 2TS are to fingerprint sensor 120.In first period, receiving circuit 132 can receive and process touch surface
The touching signals St of plate 110.In the second phase, receiving circuit 132 can receive and process the fingerprint signal of fingerprint sensor 120
Sf.In some embodiments, drive signal generation circuit 131 exports the first drive signal 1TS to touch panel in first period
110 and drive signal generation circuit 131 export the second drive signal 2TS to fingerprint sensor 120 in the second phase.
It can be seen from the above, touch control detection integrated circuit shown in Fig. 1 130 using drive signal generation circuit 131 provide one or
Multiple first drive signal 1TS and one or more second drive signal 2TS drive touch panel 110 and fingerprint sensor respectively
120.The driver' s timing of drive signal generation circuit 131, receiving circuit 132 is coordinated to receive and handle produced by touch panel 110
Touching signals St.Similarly, coordinate the driver' s timing of drive signal generation circuit 131, receiving circuit 132 also can receive and place
Manage fingerprint signal Sf caused by fingerprint sensor 120.Touch control detection integrated circuit 130 can both drive/control touch panel
110, and can drive/control fingerprint sensor 120.Therefore, touch control detection product body electricity can effectively reduce touch device 100
System cost.
Fig. 2 is according to drive signal generation circuit 131 shown in one embodiment of the invention definition graph 1 and receiving circuit 132
Circuit box schematic diagram.In the embodiment depicted in figure 2, drive signal generation circuit 131 includes buffer 210, control circuit
220, analog drive circuit 230 and de-multiplexer 240.Buffer 210, which can store, comes from the first of system processor 140
Drive waveforms data and the second drive waveforms data.System processor 140 can set one or more described first drive waveforms
Data determine the waveform of the first drive signal 1TS and/or are frequencies, and set one or more described second drive waveforms numbers
According to determining the waveform of the second drive signal 2TS and/or be frequency.
Furthermore, it is understood that the output end of control circuit 220 is coupled to the input terminal of analog drive circuit 230.Control circuit
220 input terminal is coupled to buffer 210, to read the first drive waveforms data and/or the second drive waveforms number
According to.In first period, control circuit 220 controls analog drive circuit 230 according to the first drive waveforms data, to generate
Corresponding first drive signal 1TS.In the second phase, control circuit 220 controls mould according to the second drive waveforms data
Quasi- driving circuit 230, to generate corresponding second drive signal 2TS.The input terminal of de-multiplexer 240 is coupled to analog-driven electricity
The output end on road 230.First output end of de-multiplexer 240 couples touch panel 110.The second output terminal of de-multiplexer 240
Couple fingerprint sensor 120.In first period, the selection of de-multiplexer 240 by caused by analog drive circuit 230 one or more
First drive signal 1TS is transmitted to touch panel 110.In the second phase, de-multiplexer 240 is selected analog drive circuit 230
One or more generated second drive signal 2TS are transmitted to fingerprint sensor 120.
Touch panel 110 can be capacitance type touch-control panel, e.g. known touch panel or other kinds of touch
Control panel.Fingerprint sensor 120 can be capacitance type sensor, e.g. known fingerprint sensor or other kinds of finger
Line sensor.Touch panel 110 and fingerprint sensor 120 can be separate two different elements.According to design requirement,
In some embodiments, touch control detection integrated circuit 130 can be configured in identical chips with fingerprint sensor 120.Another
In some embodiments, touch control detection integrated circuit 130 can be different chips from fingerprint sensor 120, but be configured in same
In one encapsulation.According to design requirement, in some embodiments, touch control detection integrated circuit 130 can be configured in soft electricity
On road plate (not being painted), and touch control detection integrated circuit 130 can be electrically connected to touch panel through thus flexible circuit board
110。
The present embodiment is not intended to limit the embodiment of analog drive circuit 230.For example, analog drive circuit 230 can
To be one or more digital analog converters, the digital waveform data of control circuit 220 is converted to analog drive signal.
In some embodiments, analog drive circuit 230 can be one or more known drive signal generation circuits, therefore no longer superfluous
It states.In first period, one or more first drive signal 1TS are transmitted to tactile by analog drive circuit 230 via de-multiplexer 240
One or more driving electrodes of panel 110 are controlled, and receiving circuit 132 is synchronously received/detects one or more of touch panel 110
The touching signals St of sensing electrode.In the second phase, analog drive circuit 230 via de-multiplexer 240 by one or more second
Drive signal 2TS is transmitted to one or more driving electrodes of fingerprint sensor 120, and receiving circuit 132 is synchronously received/detects
One or more fingerprint signals Sf of one or more sensing electrodes of fingerprint sensor 120.
In the embodiment depicted in figure 2, receiving circuit 132 includes 250, one groups of AFE(analog front end) (analog front of multiplexer
End, AFE) 260, one groups of analog-digital converters 270 of circuit and data processing circuit 280.First input of multiplexer 250
End is coupled to the sensing electrode of touch panel 110, to receive touching signals St.Second input terminal of multiplexer 250 is coupled to finger
The sensing electrode of line sensor 120, to receive fingerprint signal Sf.The output end of multiplexer 250 is coupled to analog front circuit 260
Input terminal.During one or more first drive signal 1TS are output to touch panel 110 (the i.e. described first period),
The touching signals St of touch panel 110 is transferred to analog front circuit 260 by the selection of multiplexer 250 via the output end of multiplexer
Input terminal.(the i.e. described second phase), multiplexer during the second drive signal 2TS is output to fingerprint sensor 120
The fingerprint signal Sf of fingerprint sensor 120 is transferred to analog front circuit 260 by 250 selections via the output end of multiplexer 250
Input terminal.
According to design requirement, analog front circuit 260 may include that multiplexer, amplifier, electric current turn potential circuit, voltage
Turn current circuit, integrator and/or filter.For example, analog front circuit 260 can be known AFE(analog front end) electricity
Road, so it will not be repeated.Analog front circuit 260 can be by the output of multiplexer 250 (that is, touching signals St or fingerprint signal
Sf after) being pre-processed in analog domain, by pretreated signal transmission to the input terminal of analog-digital converter 270.
The input terminal of analog-digital converter 270 is coupled to the output end of analog front circuit 260.Analog-digital converter
The analog signal that analog front circuit 260 is exported can be changed into digital signal by 270.Analog-digital converter 270 is via mould
Quasi- front-end circuit 260 receives touching signals, and touching signals are converted to the first numerical data.Analog-digital converter 270 is also
Fingerprint signal is received via analog front circuit 260, and fingerprint signal is converted into the second numerical data.
The input terminal of data processing circuit 280 is coupled to the output end of analog-digital converter 270, to receive described first
Numerical data and second numerical data.In some embodiments, data processing circuit 280 can via interface (such as
GPIO first numerical data and second numerical data) are supplied to the system outside touch control detection integrated circuit 130
Processor 140.In further embodiments, data processing circuit 280 can count first numerical data and described second
Digital data carries out Digital Signal Processing, to calculate corresponding induction result.
In the present embodiment, data processing circuit 280 can run algorithm to handle first numerical data, to know
Touch event is in the position (coordinate) of touch panel 110 and/or is movement speed.Data processing circuit 280 can also handle institute
The second numerical data is stated, to obtain fingerprint frame.In some embodiments, data processing circuit 280 can via interface (such as
GPIO) this fingerprint frame is sent to system processor 140.Then, system processor 140 can run algorithm to handle the finger
Line frame further to extract multiple fingerprint characteristics from fingerprint frame, and judges user's by this multiple fingerprint characteristic
Identity data.In further embodiments, data processing circuit 280 can further extract multiple fingerprints from the fingerprint frame
Then feature sends these fingerprint characteristics to system processor 140 via interface (such as GPIO).
Fig. 3 is the circuit box schematic diagram according to receiving circuit 132 shown in another embodiment of the present invention definition graph 1.Fig. 3
The related description that shown touch panel 110, fingerprint sensor 120 are referred to Fig. 2 with drive signal generation circuit 131 carrys out class
It pushes away, so it will not be repeated.In the embodiment shown in fig. 3, receiving circuit 132 includes that the first analog front circuit 310, first simulates number
Word converter 320, the first data processing circuit 330, the second analog front circuit 340, the second analog-digital converter 350 and
Second data processing circuit 360.The first analog front circuit 310 and the second analog front circuit 340 are referred to figure shown in Fig. 3
The related description of analog front circuit 260 shown in 2 is analogized, and so it will not be repeated.
The sensing electrode of the input terminal coupling touch panel 110 of first analog front circuit 310, to receive touching signals
St.The output end of first analog front circuit 310 couples the input terminal of the first analog-digital converter 320.First AFE(analog front end)
After circuit 310 can be pre-processed the touching signals St of touch panel 110 in analog domain, pretreated signal is passed
It is defeated by the input terminal of the first analog-digital converter 320.First analog-digital converter 320 can be via the first AFE(analog front end) electricity
Road 310 receives pretreated touching signals, and the analog signal that the first analog front circuit 310 is exported (believe by touch-control
Number) change into the first numerical data.The output end of first analog-digital converter 320 couples the defeated of the first data processing circuit 330
Enter end, to receive first numerical data.In some embodiments, the first data processing circuit 330 can be via interface (example
Such as GPIO) first numerical data is supplied to the system processor 140 outside touch control detection integrated circuit 130.Another
In a little embodiments, the first data processing circuit 330 can carry out Digital Signal Processing to first numerical data, be touched with calculating
The influence value of each pixel of panel 110 is controlled, and then knows touch event in the position of touch panel 110.
The sensing electrode of the input terminal coupling fingerprint sensor 120 of second analog front circuit 340, to receive fingerprint signal
Sf.The output end of second analog front circuit 340 couples the input terminal of the second analog-digital converter 350.Second AFE(analog front end)
After circuit 340 can be pre-processed the fingerprint signal Sf of fingerprint sensor 120 in analog domain, by pretreated signal
It is transferred to the input terminal of the second analog-digital converter 350.Second analog-digital converter 350 can be via the second AFE(analog front end)
Circuit 340 receives pretreated fingerprint signal, and the analog signal (fingerprint that the second analog front circuit 340 is exported
Signal) change into the second numerical data.The output end of second analog-digital converter 350 couples the second data processing circuit 360
Input terminal, to receive second numerical data.In some embodiments, the second data processing circuit 360 can be via interface
Second numerical data is supplied to the system processor 140 outside touch control detection integrated circuit 130 by (such as GPIO).Another
In some embodiments, the second data processing circuit 360 can carry out Digital Signal Processing to second numerical data, to calculate
The influence value of each pixel of fingerprint sensor 120, and then obtain fingerprint frame.Second data processing circuit 360 can be via
Interface (such as GPIO) sends this fingerprint frame to system processor 140.Then, system processor 140 can run algorithm
The fingerprint frame is handled, further to extract multiple fingerprint characteristics from fingerprint frame, and is sentenced by this multiple fingerprint characteristic
The identity data of disconnected user.
Fig. 4 is the circuit box schematic diagram according to receiving circuit 132 shown in another embodiment of the present invention definition graph 1.
In embodiment illustrated in fig. 4, drive signal generation circuit 131 includes buffer 210, control circuit 220, analog drive circuit 230
And de-multiplexer 240.Touch panel 110 shown in Fig. 4, fingerprint sensor 120, drive signal generation circuit 131, buffer
210, control circuit 220, analog drive circuit 230 and de-multiplexer 240 are referred to the related description of Fig. 2 to analogize, therefore
It repeats no more.
Receiving circuit 132 shown in Fig. 4 includes multiplexer 410, analog front circuit 420, analog-digital converter 430, number
According to processing circuit 440, microprocessor 450 and nonvolatile memory (non-volatile memory) 460.It is more shown in Fig. 4
Work device 410, analog front circuit 420, analog-digital converter 430 and data processing circuit 440 are referred to more shown in Fig. 2
Work device 250, analog front circuit 260, analog-digital converter 270 and data processing circuit 280 related description analogize.
Analog-digital converter 430 receives the touching signals St of touch panel 110 via multiplexer 410 and analog front circuit 420, and
Pretreated touching signals are converted into the first numerical data.Analog-digital converter 430 is also via multiplexer 410 and simulation
Front-end circuit 420 receives the fingerprint signal Sf of fingerprint sensor 120, and pretreated fingerprint signal is converted to the second number
Data.The input terminal of data processing circuit 440 is coupled to the output end of analog-digital converter 430, to receive first number
Digital data and second numerical data.Data processing circuit 440 can carry out at digital signal first numerical data
Reason, with calculate touch panel 110 each pixel influence value come obtain first through handle numerical data.Data processing circuit
440 can also carry out Digital Signal Processing to second numerical data, to calculate each pixel of fingerprint sensor 120
Influence value.
In other embodiments, data processing circuit 440 can run algorithm to handle first numerical data, to obtain
Know touch event in the position (coordinate) of touch panel 110 and/or is movement speed.Data processing circuit 440 can be via connecing
Mouth (such as GPIO) sends touch event to system processor 140 in the position (and/or movement speed) of touch panel 110.
In the embodiment shown in fig. 4, data processing circuit 440 can handle first numerical data to obtain first through the digital number of processing
According to.The input terminal of microprocessor 450 is coupled to the output end of data processing circuit 440, to receive first through handling numerical data
To be taken at position (coordinate) and/or the movement speed of the touch event on touch panel 110.Data processing circuit 440 may be used also
To handle second numerical data, to obtain fingerprint frame.The input terminal of microprocessor 450 is coupled to data processing circuit 440
Output end, to receive the fingerprint frame.
Nonvolatile memory 460 store to carry out touch-control calculating and/or identification of fingerprint calculus code (software code or
Firmware code).Microprocessor 450 is further coupled to nonvolatile memory 460, to read and execute this calculus code.Alternatively, non-easy
Lose property memory 460 in code can be loaded into faster memory (be not illustrated in Fig. 4, this faster memory can with it is micro-
450 cooperating of processor).Calculating based on the calculus code that touch-control calculates, microprocessor 450 can be obtained in touch panel
The touch position (coordinate) and/or movement speed of a touch event on 110.The operation of calculus code based on identification of fingerprint,
Microprocessor 450 can extract multiple fingerprint characteristics from the fingerprint frame.Therefore, microprocessor 450 can recognize the fingerprint
Frame, to generate identification of fingerprint result.Microprocessor 450 can transmit the identification of fingerprint result via interface (such as GPIO)
To system processor 140.
Fig. 5 is to show according to the circuit box of touch control detection integrated circuit 130 shown in one more embodiment of the present invention definition graph 1
It is intended to.Touch control detection integrated circuit shown in Fig. 5 130 includes that drive signal generation circuit 131, receiving circuit 132 and finger detect
Circuit 133.Touch panel 110 shown in Fig. 5, fingerprint sensor 120, drive signal generation circuit 131 and receiving circuit 132 can be with
Analogize with reference to the related description of Fig. 2, so it will not be repeated.In the embodiment shown in fig. 5, finger detection circuit 133 is coupled to drive
The analog drive circuit 230 of dynamic signal generating circuit 131 and the multiplexer 250 of receiving circuit 132.Finger detection circuit 133
To monitor whether touch panel 110 occurs finger touch event, to decide whether that it is defeated that enable drive signal generation circuit 131 is gone
Go out the first drive signal 1TS.In other words, when not having finger touch event to betide touch panel 110, drive signal generates electricity
Road 131 can not export the first drive signal 1TS to save power consumption.Conversely, when finger touch event betides touch panel 110
When, drive signal generation circuit 131 can immediately export the first drive signal 1TS to the driving electrodes of touch panel 110.
Finger detection circuit 133 can also monitor whether fingerprint sensor 120 is touched, to decide whether enable driving letter
Number generation circuit 131 removes the second drive signal 2TS of output.In other words, it when finger does not touch fingerprint sensor 120, drives
Dynamic signal generating circuit 131 can not export the second drive signal 2TS to save power consumption.Conversely, when finger has touched fingerprint biography
When sensor 120, drive signal generation circuit 131 can immediately export drives of the second drive signal 2TS to fingerprint sensor 120
Moving electrode.
In the above-described embodiments, function described herein can be realized with hardware, software, firmware.Above-mentioned buffer
It can such as memory card, flash memory or other arbitrary storage devices.For hardware realization, in conjunction with disclosed in embodiment hereof
Aspect, using processing unit various illustrative logics, logical blocks, module and circuit can one or more ASIC,
DSP, DSPD, it FPGA, transistor logic, amplifier, comparator, controller, microcontroller, microprocessor, is designed to hold
It realizes or executes in the electronic component of row function described herein.
In conclusion the touch control detection integrated circuit proposed in all embodiments of the present invention can be applied to touch panel simultaneously
110 with fingerprint sensor 120.Touch panel 110 and fingerprint sensor 120 can share the same drive signal generation circuit
131 with receiving circuit 132.Therefore, touch control detection product body electricity 130 can effectively save the system cost of touch device.
Although the present invention is disclosed as above with embodiment, however, it is not to limit the invention, those skilled in the art,
It does not depart from the spirit and scope of the present invention, when can make some changes and embellishment, therefore protection scope of the present invention is appended when regarding
Subject to claims confining spectrum.
Claims (23)
1. a kind of touch control detection integrated circuit, which is characterized in that the touch control detection integrated circuit is for driving touch panel simultaneously
At least one touching signals for receiving the touch panel fingerprint sensor and receive the fingerprint sensor at least with driving
One fingerprint signal, the touch control detection integrated circuit include：
Drive signal generation circuit, for transmitting at least one first drive signal to the touch panel, and transmission is at least
One the second drive signal is to the fingerprint sensor；And
At least one receiving circuit, the touching signals for receiving and processing the touch panel in first period, and
The fingerprint signal of the fingerprint sensor is received and processed in the second phase.
2. touch control detection integrated circuit as described in claim 1, which is characterized in that the drive signal described in the first period
Generation circuit is transmitting first drive signal to the touch panel, and the drive signal described in the second phase
Generation circuit is transmitting second drive signal to the fingerprint sensor.
3. touch control detection integrated circuit as described in claim 1, which is characterized in that the drive signal generation circuit includes：
Analog drive circuit has input terminal and output end；
Buffer, to store the first drive waveforms data and the second drive waveforms data；
Control circuit there is input terminal to be coupled to the buffer to read the first drive waveforms data or second drive
Dynamic Wave data and the control circuit have the input terminal that output end is coupled to the analog drive circuit, wherein
The control circuit described in the first period controls the analog drive circuit to generate according to the first drive waveforms data
First drive signal, and the control circuit described in the second phase control institute according to the second drive waveforms data
Analog drive circuit is stated to generate second drive signal；And
De-multiplexer is coupled to the output end of the analog drive circuit with input terminal, and the de-multiplexer has the
One output end is respectively coupled to the touch panel and the fingerprint sensor with second output terminal, wherein in the first period
First drive signal caused by the analog drive circuit is transferred to the touch panel by the de-multiplexer selection,
And the de-multiplexer described in the second phase is selected second drive signal caused by the analog drive circuit
It is transferred to the fingerprint sensor.
4. touch control detection integrated circuit as described in claim 1, which is characterized in that the receiving circuit includes：
There is multiplexer first input end and the second input terminal to be respectively coupled to the touch panel and the fingerprint sensor,
Wherein during first drive signal is output to the touch panel, the multiplexer is selected the touch panel
The touching signals be transferred to the output end of the multiplexer, and be output to the fingerprint in second drive signal
During sensor, the fingerprint signal of the fingerprint sensor is transferred to the institute of the multiplexer by the multiplexer selection
State output end；
Analog front circuit is coupled to the output end of the multiplexer with input terminal；
Analog-digital converter is coupled to the output end of the analog front circuit with input terminal, wherein the simulation numeral
Converter receives the touching signals via the analog front circuit and the touching signals is converted to the first numerical data,
And the analog-digital converter receives the fingerprint signal via the analog front circuit and turns the fingerprint signal
It is changed to the second numerical data；And
Data processing circuit there is input terminal to be coupled to the output end of the analog-digital converter to receive first number
Data and second numerical data.
5. touch control detection integrated circuit as claimed in claim 4, which is characterized in that data processing circuit processing described the
One numerical data is to know touch event in the position of the touch panel and data processing circuit processing described second
Numerical data is to obtain fingerprint frame.
6. touch control detection integrated circuit as claimed in claim 5, which is characterized in that the data processing circuit is further from institute
It states and extracts multiple fingerprint characteristics in fingerprint frame.
7. touch control detection integrated circuit as claimed in claim 4, which is characterized in that the data processing circuit is by described first
Numerical data is supplied to the system processor of the touch control detection integrated circuit external with second numerical data.
8. touch control detection integrated circuit as described in claim 1, which is characterized in that the receiving circuit includes：
There is first analog front circuit input terminal to be coupled to the touch panel to receive the touching signals；
There is second analog front circuit input terminal to be coupled to the fingerprint sensor to receive the fingerprint signal；
First analog-digital converter is coupled to the output end of first analog front circuit with input terminal, wherein described
First analog-digital converter receives the touching signals via first analog front circuit and turns the touching signals
It is changed to the first numerical data；
Second analog-digital converter is coupled to the output end of second analog front circuit with input terminal, wherein described
Second analog-digital converter receives the fingerprint signal via second analog front circuit and turns the fingerprint signal
It is changed to the second numerical data；
First data processing circuit there is input terminal to be coupled to the output end of first analog-digital converter described to receive
First numerical data, wherein first data processing circuit handles first numerical data to know touch event in described
The position of touch panel；And
Second data processing circuit there is input terminal to be coupled to the output end of second analog-digital converter described to receive
Second numerical data, wherein second data processing circuit handles second numerical data to obtain fingerprint frame.
9. touch control detection integrated circuit as described in claim 1, which is characterized in that the receiving circuit includes：
There is multiplexer first input end and the second input terminal to be respectively coupled to the touch panel and the fingerprint sensor,
Wherein during first drive signal is output to the touch panel, the multiplexer is selected the touch panel
The touching signals be transferred to the output end of the multiplexer, and be output to the fingerprint in second drive signal
During sensor, the fingerprint signal of the fingerprint sensor is transferred to the institute of the multiplexer by the multiplexer selection
State output end；
Analog front circuit is coupled to the output end of the multiplexer with input terminal；
Analog-digital converter is coupled to the output end of the analog front circuit with input terminal, wherein the simulation numeral
Converter receives the touching signals via the analog front circuit and the touching signals is converted to the first numerical data,
And the analog-digital converter receives the fingerprint signal via the analog front circuit and turns the fingerprint signal
It is changed to the second numerical data；
Data processing circuit there is input terminal to be coupled to the output end of the analog-digital converter to receive first number
Data and second numerical data, wherein the data processing circuit handles first numerical data to obtain first through place
Numerical data, and processing second numerical data are managed to obtain fingerprint frame；And
Microprocessor there is input terminal to be coupled to the output end of the data processing circuit to receive described first through processing number
Data are to obtain in the position of the upper touch event of the touch panel, or receive the fingerprint frame, for recognizing the finger
Line frame is to generate identification of fingerprint result.
10. touch control detection integrated circuit as described in claim 1, it is characterised in that the touch control detection integrated circuit also wraps
Contain：
Finger detection circuit is coupled to the drive signal generation circuit and the receiving circuit, to monitor the touch surface
Whether plate occurs finger touch event to decide whether described in enable that drive signal generation circuit exports first drive signal,
And whether the monitoring fingerprint sensor is touched to decide whether drive signal generation circuit output described in enable described the
Two driving signal.
11. touch control detection integrated circuit as described in claim 1, which is characterized in that the touch control detection integrated circuit and institute
Fingerprint sensor is stated to be configured in the same encapsulation.
12. a kind of touch device, which is characterized in that the touch device includes：
System processor；
Touch panel；
Fingerprint sensor；
Touch control detection integrated circuit is coupled to the touch panel, and is coupled to the system processor by interface, is used for
It drives the touch panel and receives at least one touching signals of the touch panel, and the driving fingerprint sensor is simultaneously
At least one fingerprint signal of the fingerprint sensor is received, the touch control detection integrated circuit includes；
Drive signal generation circuit, for transmitting at least one first drive signal to the touch panel, and transmission is at least
One the second drive signal is to the fingerprint sensor；And
At least one receiving circuit, the touching signals for receiving and processing the touch panel in first period, and
The fingerprint signal of the fingerprint sensor is received and processed in the second phase.
13. touch device as claimed in claim 12, which is characterized in that the drive signal described in the first period generates electricity
Road is transmitting first drive signal to the touch panel, and the drive signal described in the second phase generates electricity
Road is transmitting second drive signal to the fingerprint sensor.
14. touch device as claimed in claim 12, which is characterized in that the drive signal generation circuit includes：
Analog drive circuit has input terminal and output end；
Buffer, to store the first drive waveforms data and the second drive waveforms data；
Control circuit there is input terminal to be coupled to the buffer to read the first drive waveforms data or second drive
Dynamic Wave data and the control circuit have the input terminal that output end is coupled to the analog drive circuit, wherein
The control circuit described in first period generates described according to the first drive waveforms data control analog drive circuit
First drive signal, and the control circuit described in the second phase control the simulation according to the second drive waveforms data and drive
Dynamic circuit is to generate second drive signal；And
De-multiplexer is coupled to the output end of the analog drive circuit with input terminal, and the de-multiplexer has the
One output end is respectively coupled to the touch panel and the fingerprint sensor with second output terminal, wherein in the first period
First drive signal caused by the analog drive circuit is transferred to the touch panel by the de-multiplexer selection,
And the de-multiplexer described in the second phase is selected second drive signal caused by the analog drive circuit
It is transferred to the fingerprint sensor.
15. touch device as claimed in claim 12, which is characterized in that the receiving circuit includes：
There is multiplexer first input end and the second input terminal to be respectively coupled to the touch panel and the fingerprint sensor,
Wherein during first drive signal is output to the touch panel, the multiplexer is selected the touch panel
The touching signals be transferred to the output end of the multiplexer, and be output to the fingerprint in second drive signal
During sensor, the fingerprint signal of the fingerprint sensor is transferred to the institute of the multiplexer by the multiplexer selection
State output end；
Analog front circuit is coupled to the output end of the multiplexer with input terminal；
Analog-digital converter is coupled to the output end of the analog front circuit with input terminal, wherein the simulation numeral
Converter receives the touching signals via the analog front circuit and the touching signals is converted to the first numerical data,
And the analog-digital converter receives the fingerprint signal via the analog front circuit and turns the fingerprint signal
It is changed to the second numerical data；And
Data processing circuit there is input terminal to be coupled to the output end of the analog-digital converter to receive first number
Data and second numerical data.
16. touch device as claimed in claim 15, which is characterized in that data processing circuit processing first number
Data are to know touch event in the described second digital number of the position of the touch panel and data processing circuit processing
Fingerprint frame is obtained according to this.
17. touch device as claimed in claim 16, which is characterized in that the data processing circuit is further from the fingerprint
Multiple fingerprint characteristics are extracted in frame.
18. touch device as claimed in claim 15, which is characterized in that the data processing circuit is by the described first digital number
It is supplied to the system processor according to second numerical data.
19. touch device as claimed in claim 12, which is characterized in that the receiving circuit includes：
There is first analog front circuit input terminal to be coupled to the touch panel to receive the touching signals；
There is second analog front circuit input terminal to be coupled to the fingerprint sensor to receive the fingerprint signal；
First analog-digital converter is coupled to the output end of first analog front circuit with input terminal, wherein described
First analog-digital converter receives the touching signals via first analog front circuit and turns the touching signals
It is changed to the first numerical data；
Second analog-digital converter is coupled to the output end of second analog front circuit with input terminal, wherein described
Second analog-digital converter receives the fingerprint signal via second analog front circuit and turns the fingerprint signal
It is changed to the second numerical data；
First data processing circuit there is input terminal to be coupled to the output end of first analog-digital converter described to receive
First numerical data, wherein first data processing circuit handles first numerical data to know touch event in described
The position of touch panel；And
Second data processing circuit there is input terminal to be coupled to the output end of second analog-digital converter described to receive
Second numerical data, wherein second data processing circuit handles second numerical data to obtain fingerprint frame.
20. touch device as claimed in claim 12, which is characterized in that the receiving circuit includes：
There is multiplexer first input end and the second input terminal to be respectively coupled to the touch panel and the fingerprint sensor,
Wherein during first drive signal is output to the touch panel, the multiplexer is selected the touch panel
The touching signals be transferred to the output end of the multiplexer, and be output to the fingerprint in second drive signal
During sensor, the fingerprint signal of the fingerprint sensor is transferred to the institute of the multiplexer by the multiplexer selection
State output end；
Analog front circuit is coupled to the output end of the multiplexer with input terminal；
Analog-digital converter is coupled to the output end of the analog front circuit with input terminal, wherein the simulation numeral
Converter receives the touching signals via the analog front circuit and the touching signals is converted to the first numerical data,
And the analog-digital converter receives the fingerprint signal via the analog front circuit and turns the fingerprint signal
It is changed to the second numerical data；
Data processing circuit there is input terminal to be coupled to the output end of the analog-digital converter to receive first number
Data and second numerical data, wherein the data processing circuit handles first numerical data to obtain first through place
It manages numerical data and the data processing circuit handles second numerical data to obtain fingerprint frame；And
Microprocessor there is input terminal to be coupled to the output end of the data processing circuit to receive described first through processing number
Data are to obtain in the position of the upper touch event of the touch panel, or receive the fingerprint frame, for recognizing the finger
Line frame is to generate identification of fingerprint result.
21. touch device as claimed in claim 12, which is characterized in that the touch control detection integrated circuit also includes：
Finger detection circuit is coupled to the drive signal generation circuit and the receiving circuit, to monitor the touch surface
Whether plate occurs finger touch event to decide whether described in enable that drive signal generation circuit exports first drive signal,
And whether the monitoring fingerprint sensor is touched to decide whether drive signal generation circuit output described in enable described the
Two driving signal.
22. touch device as claimed in claim 12, which is characterized in that the touch control detection integrated circuit is passed with the fingerprint
Sensor is configured in the same encapsulation.
23. touch device as claimed in claim 12, which is characterized in that the touch control detection integrated circuit is configured in soft
Circuit board, and the touch control detection integrated circuit is electrically connected to the touch panel via the flexible circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010035641.6A CN111273811B (en) | 2016-12-13 | 2017-02-06 | Touch device, touch detection integrated circuit and receiving circuit thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/378,025 US10503308B2 (en) | 2016-12-13 | 2016-12-13 | Touch apparatus and touch detection integrated circuit thereof |
| US15/378,025 | 2016-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010035641.6A Division CN111273811B (en) | 2016-12-13 | 2017-02-06 | Touch device, touch detection integrated circuit and receiving circuit thereof |
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| Publication Number | Publication Date |
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| CN108614646A true CN108614646A (en) | 2018-10-02 |
| CN108614646B CN108614646B (en) | 2022-02-22 |
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| CN201710066124.3A Active CN108614646B (en) | 2016-12-13 | 2017-02-06 | Touch device and touch detection integrated circuit thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109634466A (en) * | 2019-01-30 | 2019-04-16 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED touch-control display panel and its time-sharing multiplex driving method |
| CN110826479A (en) * | 2018-12-27 | 2020-02-21 | 神盾股份有限公司 | Electronic device and under-screen fingerprint sensing method thereof |
| CN111353421A (en) * | 2019-04-19 | 2020-06-30 | 神盾股份有限公司 | Optical fingerprint sensing device |
| CN111488561A (en) * | 2019-01-28 | 2020-08-04 | 联咏科技股份有限公司 | Method, electronic device and system for simultaneously performing touch sensing and fingerprint identification |
| TWI722818B (en) * | 2019-03-07 | 2021-03-21 | 聯詠科技股份有限公司 | Fingerprint signal processing circuit and method |
| TWI741556B (en) * | 2019-04-09 | 2021-10-01 | 聯詠科技股份有限公司 | Driving apparatus and operation method thereof |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI635413B (en) * | 2017-07-18 | 2018-09-11 | 義隆電子股份有限公司 | Fingerprint sensing integrated circuit |
| WO2019196116A1 (en) * | 2018-04-13 | 2019-10-17 | 深圳市汇顶科技股份有限公司 | Touch detection chip, and method for detecting touch screen |
| US11320928B2 (en) * | 2019-08-01 | 2022-05-03 | Novatek Microelectronics Corp. | Electronic circuit having display driving function, touch sensing function and fingerprint sensing function |
| US11232282B2 (en) * | 2019-08-21 | 2022-01-25 | Novatek Microelectronics Corp. | Control circuit, display system, and related method of controlling display panel |
| US11551466B2 (en) | 2019-08-21 | 2023-01-10 | Novatek Microelectronics Corp. | Control circuit and related method for controlling display panel |
| US11442572B2 (en) * | 2019-10-17 | 2022-09-13 | Samsung Electronics Co., Ltd. | Touch display controller and touch display system including the same |
| KR20220137194A (en) * | 2021-04-01 | 2022-10-12 | 삼성디스플레이 주식회사 | Fingerprint sensor device, display device including the same, and method for driving the display device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6246395B1 (en) * | 1998-12-17 | 2001-06-12 | Hewlett-Packard Company | Palm pressure rejection method and apparatus for touchscreens |
| CN101765825A (en) * | 2007-07-27 | 2010-06-30 | 三星电子株式会社 | The pressure sensor array apparatus and the method that are used for tactile sensing |
| TW201108084A (en) * | 2009-06-24 | 2011-03-01 | Ident Technology Ag | Electrode arrangement for display device |
| CN104834426A (en) * | 2015-05-22 | 2015-08-12 | 京东方科技集团股份有限公司 | Fingerprint identification device, touch panel and display device |
| CN105373269A (en) * | 2014-09-01 | 2016-03-02 | 原相科技股份有限公司 | Touch display apparatus and operation method therefor |
| US20160148034A1 (en) * | 2014-11-25 | 2016-05-26 | Cypress Semiconductor Corporation | Methods and Sensors for MultiPhase Scanning in the Fingerprint and Touch Applications |
| CN105975947A (en) * | 2016-03-25 | 2016-09-28 | 深圳市奔凯安全技术股份有限公司 | Global scanning type fingerprint processing method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11283026A (en) | 1998-03-26 | 1999-10-15 | Matsushita Electric Ind Co Ltd | Touch pad provided with fingerprint detection function, and information processor |
| CN101626417A (en) | 2008-07-08 | 2010-01-13 | 鸿富锦精密工业（深圳）有限公司 | Method for mobile terminal authentication |
| TWI453633B (en) * | 2011-01-17 | 2014-09-21 | Raydium Semiconductor Corp | Control device for a touch panel |
| US9310940B2 (en) * | 2011-01-17 | 2016-04-12 | Pixart Imaging Inc. | Capacitive touchscreen or touch panel with fingerprint reader |
| CN104166489B (en) * | 2014-08-05 | 2018-07-10 | 京东方科技集团股份有限公司 | Display panel, display device and display drive method |
| CN104282265B (en) * | 2014-09-26 | 2017-02-01 | 京东方科技集团股份有限公司 | Pixel circuit, drive method thereof, an organic light-emitting display panel and display device |
| WO2016085560A1 (en) * | 2014-11-25 | 2016-06-02 | Cypress Semiconductor Corporation | Methods and sensors for multiphase scanning in the fingerprint and touch applications |
| CN205486037U (en) * | 2016-01-12 | 2016-08-17 | 宸鸿科技(厦门)有限公司 | Touch -control detection device of function is discerned to utensil fingerprint |
| KR102589636B1 (en) * | 2016-08-05 | 2023-10-17 | 삼성전자주식회사 | electronic device including fingerprint sensor |
-
2016
- 2016-12-13 US US15/378,025 patent/US10503308B2/en active Active
-
2017
- 2017-02-06 CN CN202010035641.6A patent/CN111273811B/en active Active
- 2017-02-06 CN CN201710066124.3A patent/CN108614646B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6246395B1 (en) * | 1998-12-17 | 2001-06-12 | Hewlett-Packard Company | Palm pressure rejection method and apparatus for touchscreens |
| CN101765825A (en) * | 2007-07-27 | 2010-06-30 | 三星电子株式会社 | The pressure sensor array apparatus and the method that are used for tactile sensing |
| TW201108084A (en) * | 2009-06-24 | 2011-03-01 | Ident Technology Ag | Electrode arrangement for display device |
| CN105373269A (en) * | 2014-09-01 | 2016-03-02 | 原相科技股份有限公司 | Touch display apparatus and operation method therefor |
| US20160148034A1 (en) * | 2014-11-25 | 2016-05-26 | Cypress Semiconductor Corporation | Methods and Sensors for MultiPhase Scanning in the Fingerprint and Touch Applications |
| CN104834426A (en) * | 2015-05-22 | 2015-08-12 | 京东方科技集团股份有限公司 | Fingerprint identification device, touch panel and display device |
| CN105975947A (en) * | 2016-03-25 | 2016-09-28 | 深圳市奔凯安全技术股份有限公司 | Global scanning type fingerprint processing method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110826479A (en) * | 2018-12-27 | 2020-02-21 | 神盾股份有限公司 | Electronic device and under-screen fingerprint sensing method thereof |
| CN111488561A (en) * | 2019-01-28 | 2020-08-04 | 联咏科技股份有限公司 | Method, electronic device and system for simultaneously performing touch sensing and fingerprint identification |
| CN111488561B (en) * | 2019-01-28 | 2023-12-12 | 联咏科技股份有限公司 | Method, electronic device and system for simultaneously performing touch sensing and fingerprint identification |
| CN109634466A (en) * | 2019-01-30 | 2019-04-16 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED touch-control display panel and its time-sharing multiplex driving method |
| CN109634466B (en) * | 2019-01-30 | 2020-11-24 | 武汉华星光电半导体显示技术有限公司 | OLED touch display panel and time-sharing multiplexing driving method thereof |
| TWI722818B (en) * | 2019-03-07 | 2021-03-21 | 聯詠科技股份有限公司 | Fingerprint signal processing circuit and method |
| US11682230B2 (en) | 2019-03-07 | 2023-06-20 | Novatek Microelectronics Corp. | Fingerprint signal processing circuit and method for signal compensation in analog front-end |
| TWI741556B (en) * | 2019-04-09 | 2021-10-01 | 聯詠科技股份有限公司 | Driving apparatus and operation method thereof |
| US11423685B2 (en) | 2019-04-09 | 2022-08-23 | Novatek Microelectronics Corp. | Driving apparatus and operation method thereof |
| CN111353421A (en) * | 2019-04-19 | 2020-06-30 | 神盾股份有限公司 | Optical fingerprint sensing device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180164943A1 (en) | 2018-06-14 |
| CN111273811A (en) | 2020-06-12 |
| CN108614646B (en) | 2022-02-22 |
| CN111273811B (en) | 2023-03-31 |
| US10503308B2 (en) | 2019-12-10 |
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